/**
 * #      1640
 * 名称   能否连接形成数组
 * 链接   https://leetcode-cn.com/problems/check-array-formation-through-concatenation
 * 题解   [167](https://leetcode-cn.com/problems/check-array-formation-through-concatenation/solution)
 * 通过率 68.4%
 * 难道   简单
 */

